Moore was also on the Flyers' roster for the 1979 playoffs. He played five games in the playoffs as well, more than any other Flyers' goalie that season.[11] He had a 4.03 goals against average in the playoffs and one assist, as the Flyers won their first round playoff series against the Vancouver Canucks but lost to the New York Rangers in the second round.[4][11]

Moore spent the entire 1979-80 season with the Maine Mariners, sharing the goaltending duties primarily with St. Croix.[3][4][12] Moore played 32 games with a 3.51 goals against average.[3] The Mariners again led the AHL in goals against average and Moore again earned the Harry "Hap" Holmes Memorial Award, sharing it with St. Croix this time.[2][3][5] In 1980-81 Moore again played the entire season with the Mariners, playing 25 games with a 3.86 goals against average while sharing the goaltending job with Pelle Lindbergh and Sam St. Laurent.[3][4][13] The Mariners led the AHL in goals against average once again, and Moore earned his third consecutive Harry "Hap" Holmes Memorial Award, this time sharing the award with Lindbergh.[2][3][5]